serial port 串口通信 波特率 设置 写的很好-serial port

这个就是windows下的操作的，是最底层的派生类-This is operating under the windows, is the most derived class

串口下载，一个Test,实现串口数据的读取。为串口下载做准备(win_qextserialport QT on a single-chip serial communication with the interface. Functions: Set the serial port parameters, including baud rate, data bits, parity bit and stop bit. (2) Select the serial port and open. 3